Festo DRRD-08/10 - Manual (Page 3)

The following settings are possible:
Size 8 10
Angle adjustment per rotation [°] 8.2 6.8
Max. shock absorber setting XPmax [mm] 11.9 13.8
Min. shock absorber setting XPmin [mm] 5 5
Fig. 13
6. Tighten the locking nut of the shock absorber. Observe the tightening torque:
Size 8 10
ß Internal hexagon socket [mm] 3 3
ß Lock nut [mm] 8 8
Tightening torque [Nm] 1 1
Fig. 14
7. Repeat the procedure to set the second end position.
5.2 Carrying out commissioning
1. Start a test run at low swivel speed.
2. When conducting the test run, check whether the DRRD settings need to be
corrected. These could be:
– swivel angle of the payload (
Fig. 12)
– swivel speed of the payload.
3. Unscrew the one-way flow control valves (B) slowly again up to the desired swiv-
el speed.
4. Interrupt the test run if the piston can be heard to strike hard.
Causes of metallic striking may be:
– mass moment of inertia of the payload too high
– swivel speed of the payload too high
– no compressed air cushion on the exhaust side
– Shock absorber unscrewed too far (maximum values
Fig. 13).
5. Make sure you remedy the above-named causes.
6. End the test run when all of the necessary corrections have been detected.
6 Operation
Caution
Danger of injury from moving masses.
• Make sure that in the swivel angle of the DRRD
– nobody can reach in
– no foreign objects can enter
(e.g. by means of an individual protective guard).
In the case of several uninterrupted swivel cycles:
Note
Operational reliability can be impaired by an excessive temperature rise.
• Make sure that the following maximum swivel frequency is not exceeded.
Size 8 10
Maximum swivel frequency [Hz] 2.2 2.1
Fig. 15
7 Maintenance and care
To check functioning of cushioning:
• Carry out the following steps:
DRRD-... P
Test interval 2 million switching cycles
Procedure 1. Check the function of the shock absorbers.
In case of audible bottoming out or rebounding:
2. Replace the cushioning components and seals (lubricate the cushioning
components before installation with, for example, LUB-KC1).
Replacement in-
terval If there is evidence of wear (bottoming out)
Fig. 16
If the piston can be heard to strike hard in the end position:
• In case of wear, replace the internal cushioning components of the DRRD
( 8 Disassembly and repair).
• If the DRRD is contaminated, clean it with a soft cloth.
Permissible cleaning agents include:
– warm soap suds up to +60 °C
– petroleum ether
– all non-abrasive cleaning agents.
8 Disassembly and repair
For eccentric masses on the lever arm:
Caution
Danger of injury from masses dropping suddenly.
• Make sure the payload has reached a stable position before venting (e.g. the
lowest point).
• Make sure that the semi-rotary drive is exhausted for disassembly.
• Recommendation: Send the product to our repair service.
This way, the required fine tuning and tests will be taken into special considera-
tion.
• Information about spare parts and accessories can be found at:
www.festo.com/spareparts.
To replace the integrated cushioning components
( 9 Accessories):
• Carry out the following steps:
1. Vent the DRRD.
2. Measure the position of the shock absorber
(dimension XP) and loosen the lock nut on the
shock absorber
8.
3. Unscrew the shock absorber, lubricate the new
cushioning component (e.g. with LUB-KC1) and
assemble. Use new sealing discs (C
Fig. 17) if
required.
4. Screw in shock absorbers up to dimension XP
( point 2).
5. Check the angle adjustment and correct,
if necessary.
6. Tighten the lock nut on the shock absorber 8
(tightening torque Fig. 14).
Fig. 17
(C)
9 Accessories
Note
• Select the corresponding accessories from our catalogue
www.festo.com/catalogue.